I just ordered these off of Amazon:
https://www.amazon.com/TDZWIN-Packing-Stronger-Handles-Compatible/dp/B09WYR2LKG/ref=mp_s_a_1_3?crid=2D5T2MSGKYLTT&keywords=tdzwin+moving+bags&qid=1689437844&sprefix=TDZW%2Caps%2C350&sr=8-3
They seem to be beefier than IKEA bags and have better carrying straps. If you want a quality report when they arrive, lmk.
The vacuum bags work great for reducing the size of bedding and pillows. Minivans hold a lot behind the second row. I would do a preload and see how it goes. If you think you need more space and have a tray style bike rack, you can raise the wheel holders and use cam straps and bungees to attach the ikea style bags to the trays and wheel holders. Might want to wrap them in a tarp first in case it rains. It works well with our Kuat and Yakima racks.